Skiving-machine.



H. LYON.

SKIVING MACHINE. APPLIGATION'FILED 31111.21, 1910.

1,080,227. Patenteanee. 2, 1913.

a SHEETS-sum1.

COLUMBIA PLANOGRAPH c0..wAsH|NGToN. D, c.

H. LYON.

SKIVING MACHINE.

APPLICATION FILED 11111.21, 1910.

1,080,227. Patented Dec. 2, 1913.

SHEETS-SHEET 2.

coLuMBm PL'GRAPn co.. wAsnmnToN, u. c,

H. LYON.

SKIVING MACHINE.

APPLICATION FILED JAN.21,1910. 1 ,080,227. Patented De0.`2, 1913.

3 SHEETS-SHEET 3.

HARRY LYON, on `Enocnn:o1v,"iflvinissricrrusEras:,assielvoigaisgjr MEQsNESnssfGNMENTs, L ToUmTEn sHoE MACHINERYCOMPANE 0E PATEEsoN; NEW JERSEY, ,A lcon1`2o- Specification of Letters Patent(4 ,PatentedlDea 2, 1913;

Applibation'led'JanuaryZL 19150."- Ser-alirN-U: 5395426.

Beit known thatI, HARRY-'Brema citizen14 oftthe-United States, residingfat Brockton,i

in 'the vcounty of "Plymouth f and *State `of Massachusetts; halveffinvented certain: ne'vv andfuseful Improvements in Skiving-Machilies, of which the"'follovvingfisa-specifi- October 28,187'91l Such maehine,' andothers ofthis type usually comprise as their prin-C cipal parts, a-=rotatr` `ry-kni`feori cutter', feedl roll or drum" for' feed-ingthe*stoekfto su'ch knife; a *feeding f disk to 'coperate' With the roll'forf'drum inthe"feedingwperation, an edge v-gage to 'guide-the stock, and` presser.` The steekl isintr'oduced between the peripheryof` the vfeed roll andthe face-of the feed# diskfthrough@thefcombined action of WhichV devices itis Lfedtothe-knifeto be thereby skived or beveled, andfftheedg'e gage and presser areV reliedupon -du'ring` such opera` tion- Vto properlydirect the-stock"and to hold thatportion' of-*the edge Which isto beV skived' orA beveled against theperiphery of fthe feed roll: @ne objection to machines ofV the character referred v"toisthat the feeding devices=sometimes fail to advance the stock accurately to the cutter', as the stock Will often exhibit atendency to move away'from the edge gage, and, as aconsequence Will be skived' unevenly, and 4frequently spoiled; In order to prevent this it is necessary that'the operator exercise agreat amount of care in holding the stock With its edge against the gage, fromfthemomentthat he introducesy it into the 4machine until the completion of the skiving operation, and even then it sometimes happens thatapiece of stock vvillf-ber moved aw'ayfrom the gage,` and `either `be badly injured, or' spoiled.A

With a view to overcoming'"th'isolojectionV to sueh'prior machines,'a venyimportant obj ect" of the present '1 invention isrto 1 Vprovide means for maintaining theleather or other stockl in contact With an edge gage While machine,

ter; Preferably,suchvflneans is alsoPad'apted'A to ass1st=1n advancin-'gthe Ysteek-to thei knife, `andi tothis end it may cons-ist'o'f a device which is located :iin-suitable coperative relation With-the= usualL mainflfeed roll of the l and* Whose construction and ar` rangement are suchthat it -a'cts ini conjunctionV with said'fe'edJ-rllf inlfeedi'ngthe 'stocklV toward the knifegasWellas'acting--to hold- -Vthe stock Vagainst the edgegage.L

Inlthemachine herein'- selected for illusof-an` auxiliary'fee'd roll, which is supported above thefmainf'feed'rollt-With its peripheryl ,suitably spacedtherefrom;` the Laxis of lthe auxiliary feed roll -bei`ngl arranged, preferably, at!y rightangles toi the axis ofV` the Imain'` feed-roll.. As shown herein, also, the pey ffee'd rollA is beveled,

manner f heretofore f explained? The laxis of thefsaid aux1l1ary`feed roll may-be conven# -fiently supported upon al carrierA in the form ofyokebetwveenlthearms of which the roll Willi be mounted, and? said -yoke mayl have yan extensiontto' be supported,- adjustably," by a mem-ber having` a-rockingh or pivotal connec- 'tionwi'thf the frame `of*A the machine.V A?

spring, or other yieldingSdevice,` mayf be arranged to A'act onathe supportingI yoke or car- `r1er `ini a manner to press the "auxiliaryfroll dovvn upon' the stock, but of such strength as to yield readilyto permit stock of varying thickness to be fed to the knife.

Another 'feature offthe invention consists in supportingf the edge gage'uponfthe same carrier which -supportstheauxiliary feed roll; whereby,- assa-id roll yields, `more or less," in response to variations'in thethickness offthe stock,- the V'gage will follow' the movements of thev roll and bel maintained inr the Asame positionfthereon relatively tothe upper surface of theistock.

Other'features of the invention, including important details of construction and combinat'ions of parts, will be` hereinafter more particularly described 4and claimed. Y

In* the drawings: Figure vl represents,`in'

side elevation, a maehine embodying the present'invent1on,F1g. 2 represents an end elevation of the same, Fig. 3 is a detail view showing the knife and its supporting and adjusting devices, Fig. 4 is a detail view, showing, in plan, the auxiliary feed roll and its allied parts, Fig. 5 is a vertical cross sectional view on the line 5-5, of Fig. 4, and Fig. 6 is a detail view of the edge gage.

The main frame of the machine 1, is shown as carrying spaced bearings, 3, 3, for the driving shaft 2, having fast thereon the pulley 5 which is adapted to receive power, through a belt, from any suitable source. The shaft 2 is also shown as having thereon the fast pulleys, 7 and 9, which are adapted to receive suitable belts for conveying power, respectively, to the rotatory skiving knife and to the auxiliary feed roll, as will be described later. A feed roll or drum 11, which also acts as a work support, is shown as being composed of a smooth cylindrical portion 61, and a scored or roughened frusto-conical portion 68, and is keyed or otherwise fastened to the shaft 2, at or near the opposite end thereof to that carrying the pulleys, said feed roll being hereinafter referred to as the main feed roll.

The main frame l is shown as supporting a secondary frame creasing 4, through a wall of which lpasses a stud 23, having thereon a rotarily adjustable split clamping'collar 21. 'The stud 23 carries at one end a head, or nut, 24, and at its opposite end is provided with threads to receive a nut 24, which serves to' adjustably clamp the collar 21 between the head 24 and the casing 4, suitable spacing washers being interposed between the collarl and casing, as shown. The split colla-r 21 has internally threaded lugs to receive a screw 20, and said collar embraces the stem 19 of a split clamping collar 17, which is provided with internally threaded lugs to receive a screw 18. lThe stem v16 of a yoke 15 is adjustably supported in the collar 17, and the arms of this yoke are shown as supporting bearings for the shaft 12, which carries a fast pulley 25, and a skiving knife 13, said parts being located, respectively, upon opposite sides of the bearings in the yoke.

The skiving knife herein illustrated is of conical, or dislied form, but it is to be understood that any other form of knife may be employed, as, for instance, the ordinary flat or disk knife as shown in the Letters Patent hereinbefore referred to. As shown in Fig. 2, the knife 13 is supported with its cutting edge in suitable proximity to the perimeter of the feed roll 11, and the adjustments afforded by the rotary clamping collar 21 and the clamping collar 17, permit the knife to be set in proper position relatively to the feed roll 11 as the edge of the knife wears away, and also permit the knife to be raised and lowered with respect to the roll to accommodate stock of varying degrees of thickness. The knife 13 may be rotated by any approved means, as for instance Yby a belt whichpasses from the fast pulley 7 over any suitable arrangement of idler pulleys to the fast pulley 25.

The casing 4 is shown as perforated to receive a stud 38, which may be clamped to the casing by a nut 38. The stud 38 serves as a pivotal support for an arm 40, which is formed or provided with a split clamping collar 42, having threaded lugs to receive an adjusting screw 44. The collar 42 receives the stem 46 of a split clamping collar 48, which is provided with threaded lugs to receive an adjusting screw 50. A yoke 27 carries spaced bearings 28 which support a shaft 29, having fast thereon the auxiliary feed wheel 3() and its pulley 32, said feed wheel and its pulley being, as shown, arranged between the arms of the yoke with the axis of the feed wheel 30 at right angles to the axis of the main feed wheel 11. The periphery of the auxiliaryfeed wheel is preferably beveled on a suitable angle, and provided with a plurality of inclined scores or incisions in order to enable it to frictionally engage the smooth surface of a piece of leather, or other stock, and feed it in a mannerY which will be described later. The yoke 27 is shown as having an extension or stem 27 which is adjustably received within the clamping collar 48, and a bent rod 28 extends rearwardly from the stem 27 and is connected to one end of a spring Y 56 whose opposite end is connected to a rod or o-ther form of bracket 54, clamped to the casing 4. A suitable stop, herein shown as a screw 52 which is threaded in a bracket secured to the casing 4 and provided with a lock nut 52, is arranged to be engaged by the end stem 27 of the yoke and to adjustably limit the distance at which the auxiliary feed wheel is normally maintained from the periphery of the main feed wheel. The weight of that portion of the yoke 27- which lies on the left hand side of its pivotal support, together with the spring 56, will tend to hold the auxiliary feed wheel down upon the stock, while permitting said wheel to yield, more or less, according to the thickness of the stock as it is being fed to the knife.

The auxiliary feed wheel, in the arrangement shown, is driven from the main drive shaft 2 through a belt 58, which passes over the pulley 9 on said shaft, and the pulley 32,

and which may also pass over idlers 59,

insegaea lies with its -upper face" closelyadjaceritv to" theA beveledi periphery ofthe feed wheel 30, while'its stock-engaging faceis` closely ad- ]acent* to'V` the inner edge of' the feed wheel .i ll, and a -lug isformed on or secured to p the-"crage `and fits snugly against a face of the fPeed-wheelfq as shown inFig'. l.V

In the operation of the machine, Whenl povveris applied through a beltor other -lappropriatemeans to theshaftQ 'so as to' 25.feedwheelsftheaction of the wheel ll being I claim as` new and to advance the stocktoward" the knife in the usual manner, while thewheel 30 frictionally engages its opposite surface and acts to impart a combined'laterah and forward movement to the stock, whereby tomaintain its edge against the gage 35, and to also aid in feeding it to the'knife. As the stock variesin thickness ithe auxiliary feed *wheel will be permitted to yield through the pivotallconnection' ofithe yoke or carrier 27 withl its support, but saidwheelf will be auto-` matically-held down upon the stock by the spring 56, and the`-weight ofthe yoke and devices carried thereby, and will thus prevent the-stock from rising. or curling up, prior to the action thereon of the skiving knife. In view of the fact that the edge gage-is supported by the yoke27, said gage will' follow these movements of the auxiliary feed wheel and hencei always be maintained in the same l relation therewith, irrespective of the thickness of the stock being skived.

The `collar iQ'may' be releasedZ from clamping engagement vwith the stem 4:6, to permit vertical adjustment'of the auxiliary feed wheel so as to locate ittherdesired distancel above the main'fee'd wheel, and the collar 48 may be similarly released from clamping engagement with the stein of the yoke 27 to permit rotary adjustment of the yoke in order thatthe beveled `edge of the auxiliary feed 4wheel may beset at the desiredl angle to the'periphery of thelfmainfeed wheel ll.`

Having thus described my invention, what 'desire to secure by Letters Patent of the United States is:

1. In a machine `oftheclass described, the combination with a skiving knife, of'a gage, and -a'device mounted for rotary rnovement i in a plane substantially transverse tolthat combination with a `a feedroll toract oni one side of vvancingastock to the knife,

'inwhichtlrestocklis fed to the knife and arranged to advancethe'i stock' and to hold it -againstlthe gage.

2. In alinachineof the class described, the combination with" a skiving knife, of agage,

feeding means for thel stock, an'dY1 a device' mounted for lrotary-movement in "a plane substantiallytransversetot that in which the stock is fed to the knife and arranged'to'4 impart ai combined forward and lateral movement to the stocktom-aintain it against thev gage. l

In'a'macliine ofthe class described, the skiving knife, of a frage, feeding; means to engage one side of the stock, and a' device to engage the oth'erside of the stock mounted for rotary movement ina plane substantially transverse to the planein whichthe stock-moves as Ait is-fed to theknife, saiddevice being arrangedfto .copeiatewvith said'means in feeding the stock and also acting to move the stock laterally against `the gage.

4.In va machine V4of the class described, the combinationJ with a skiving-knife, of a: gage, a feed roll for advancing stock to said knife, and a roll mounted vfor rotary movenientin a plane substantially transverse' to the planen of movementofthe` stock andacting to advancethe stock an'd also@ toy forcetlie stock aga'inst'said gage;

5. Iii a mach-ine of the class described, the

combination with al'skiving -knife, of a gage; the stock,- andv af-rolltcl act onthe other side of the stock and' rotatable in a glane substantially transversef to the plane of movement of the feed roll to feed the stock and force Vit against Saidgage.

6. In a machineofthe class described, the combination of a skiving knife, a gage, a feed roll for advancing stock'to` the knife, anda roll supported formovementabout an `'axis arranged at an angleto the axis of said feed roll and constructed toinove the stock in adirection to maintainv it in engagement with said gage while it is beingv fed to the knife.

7. In a'skiving machine, the combination of a skiving knife, a gage, a feed roll for ad` and a roll supported for movement about an axis arrangedy substantially parallel with the plane of thestock andati anl angle to the axis of the=feedl=roll and acting to maintain the stock against said gage while it is being fed to the knife.

8. A machine of the class described having in combination, a skiving knife, a gage,

a feed roll'for acting on one side of stock,

and an auxiliary feed roll foracting on the opposite side of the stock arranged tohold the stock against said gage, While it is being fed to the knife, said auxiliary feed roll having a beveled periphery.

9. A machine of the class described having in combination, a skiving knife, a gage, a feed roll for acting on one side of stock, and an auxiliary feed roll for acting on the opposite side of the stock arranged to hold the stock against said gage, While it is being fed to the knife, said auxiliary feed roll having a beveled periphery provided with incisions.

l0. A skiving machine having, in combination, a knife, a gage, a main feed roll, and an auxiliary feed roll having its axis arranged substantially at right angles to the axis of the main feed roll, said auxiliary feed roll being constructed to hold the stock against said gage While it is being fed to the knife.

11. A skiving machine having, in combination, a knife, a gage, a main feed roll, actuating means therefor, and an auxiliary feed roll provided with a beveled periphery scored obliquely and having its axis arranged substantially at right angles to the axis of the main feed roll, said auxiliary feed roll acting to force the stock against said gage.

12. In a machine of the class described, the combination of a skiving knife, a Work support, a gage, and driven means for advancing stock in a direction to hold it against said gage, While it is being fed to the knife, arranged to yield in response to variations in the thickness of stock.

13. In a machine of the class described, the combination of a skiving knife, a gage, a main feed roll and an auxiliary feed roll operating to hold the stock against said gage, While it is being fed to the knife, and arranged to yield to accommodate stock of varying degrees of thickness.

14. In a machine of the class described, the combination of a skiving knife, a gage, a main feed roll, an auxiliary feed roll operating to hold the stock against said main feed roll and to crowd the stock against the gage While it is being fed to the knife, and a pivotal support for said auxiliary feed roll arranged to yield for accommodating stock of varying degrees of thickness.

15. In a skiving machine, the combination of a knife, a Work support, a gage, and means for advancing stock and forcing it against said gage, said means and gage being supported for yielding movements relatively to said Work support in response to variations in the thickness of stock.

16. In a skiving machine, the combination of a skiving knife, a Work support., a gage, a feed roll and operating means therefor constructed and arranged to impart to the stock movements to hold it against said gage as it is being fed to the knife, a yoke for supporting said feed roll, and pivotal means for supporting said yoke.

17. In a skiving machine, the combination of a skiving knife, a Work support, a gage, a feed roll and operating means therefor constructed and arranged to hold stock against said 'gage as it is being fed to the knife, a yoke for supporting said feed roll, a pivotal support for said yoke, and yielding means acting on the yoke for holding said feed roll upon the stock.

18. In a skiving machine, the combination of a skiving knife, a Work support, a gage, a feed roll and operating means therefor constructed and arranged to impart to the stock movements to hold it against said gage as it is being fed to the knife, a yoke for supporting said feed roll and gage, and pivotal means for supporting said yoke.

19. The combination of a skiving knife, a Work support, a gage, a feed roll and operating means therefor constructed and arranged to impart to the stock movements to hold it against said gage as it is being` fed to the knife, pivotal supporting means for said feed roll, a yielding device acting thereon for moving said feed roll tovvard the Work support, and means for adjustably determining the extent of the movement imparted to the feed roll by said yielding device Whereby the feed roll may be positioned different distances from said Work support in accordance With variations in the thickness of the stock.

20. In a machine of the class described, the combination of a skiving knife, a main feed roll, a gage, an auxiliary feed roll having a beveled periphery and actuating means therefor constructed to hold stock against the gage as it is fed to the knife, a support for the auxiliary feed roll, and means permitting adjustment to vary the angle presented by the beveled periphery of said roll and the surface of the main feed roll.

21. In a machine of the class described, the combination of a skiving knife, a main feed roll, a gage, an auxiliary feed roll having a beveled periphery and actuating means therefor constructed to hold stock against the gage as it is fed to the knife, a support for the auxiliary feed roll, and means permitting adjustment to vary the angle presented by the beveled periphery of said feed roll and the surface of the main feed roll and also to vary the space between said rolls.

22. A machine of the class described having, in combination, a skiving knife, a main feed roll, a gage, a power-driven auxiliary feed roll arranged to rotate in a plane transverse to the plane in which the stock moves as it is fed to the knife for holding the stock against the gage, and yielding means for supporting said auxiliary feed roll.

23. A machine of the class described having, in combination, a skiving knife, a main feed roll, a gage, a power-driven auxiliary feed roll arranged to rotate in a plane transverse to the plane in which the stock moves as it is fed to the knife for holding the stock against the gage, and yielding means for supporting said gage and auxiliary feed roll for simultaneous movement toward and from the main feed roll.

24. In a skiving machine, the combination 0f a skiving knife, a gage, a feed roll for advancing the stock to the knife, and a roll supported for movement about an axis substantially parallel to the line of feed and adapted to maintain the edge of the stock against the gage while said stock is being operated upon by said knife.

25. In a skiving machine, the combination of a skiving knife for acting upon the stock, a gage, means for feeding the stock in a direction parallel to the face of the gage, and means rotating in a plane substantially transversely of the line 0f feed for crowding the edge 0f the stock against the gage.

26. In a skiving machine, the combination of a skiving knife for acting upon the stock, a gage, means for feeding the stock in a direction parallel to the face of the gage, and power actuated means moving in a plane substantially transversely of the line of feed for crowding the edge of the work against the gage.

27. In a skiving machine, the combination of a knife, an edge gage, a feed roll adapted to advance the stock in a substantially horizontal plane and an auxiliary feed roll rotatable about a horizontal axis in a path the plane of which forms an angle with the direction of feed whereby the work is continually crowded against the edge gage during the feeding movement.

In testimony whereof I aflix my signature in presence of two witnesses.

I-I. C. I-IoBART, EVERETT M. A'rwooD.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, 

